"Solid and handy"
Solid and good size, would fit easily in a purse or pocket with your phone.
Build quality seems decent, mostly metal body. The hole the cable slots into isn't a good fit though, and it takes several attempts to put the cable and mini-usb end into its hole. I had the previous incarnation of the Iceworks 5000 I think, with the two cables and I preferred that, but it's no longer available.
Example of recharge: iPhone 6s went from 15% to 50% in 25 minutes.
Although I knew this only had one cable, and the little adapter for Lightning, I still wish there was just a Lightning one. The attachment makes the device and charging process just bit more fiddly, but yes having the cable built into the battery is pretty handy.